<div class="card">
    <div class="card-header">
      {{singlepage.title}}
    </div>
    <div class="card-body">
      <p class="card-text" [innerHTML]="singlepage.summary | tohtml">
        
      </p>
      <a class="btn btn-primary" (click)="goBack()">返回</a>
    </div>
  </div>
